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Maintenance Rights Intangible And Lease Premium, Net (Schedule Of Maintenance Rights Intangible And Lease Premium) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Maintenance Rights Intangible And Lease Premium, Net [Abstract]
Maintenance rights intangible	$ 2,117,034	$ 3,068,318
Lease premium, net	50,891	70,727
Maintenance Rights Intangible And Lease Premium, Net	$ 2,167,925	$ 3,139,045

X

- Definition

Lease Premium

+ References

No definition available.

+ Details

Name:	aer_LeasePremium
Namespace Prefix:	aer_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Maintenance Rights Intangible

+ References

No definition available.

+ Details

Name:	aer_MaintenanceRightsIntangible
Namespace Prefix:	aer_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Maintenance Rights Intangible And Lease Premium [Abstract]

+ References

No definition available.

+ Details

Name:	aer_MaintenanceRightsIntangibleAndLeasePremiumAbstract
Namespace Prefix:	aer_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maintenance Rights Intangible And Lease Premium, Net

+ References

No definition available.

+ Details

Name:	aer_MaintenanceRightsIntangibleAndLeasePremiumNet
Namespace Prefix:	aer_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant